There are 4 on the website. But FYI, other types of studies besides RCTs are valuable in drawing conclusions, too. https://www.historyofvaccines.org/content/bl

There are 4 on the website. But FYI, other types of studies besides RCTs are valuable in drawing conclusions, too. https://www.historyofvaccines.org/content/blog/vaccine-randomized-clinical-trials https://www.historyofvaccines.org/content/blog/vaccine-rando...